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  <div class="section" id="byte-array-objects">
<span id="bytearrayobjects"></span><h1>字节数组对象<a class="headerlink" href="#byte-array-objects" title="永久链接至标题">¶</a></h1>
<span class="target" id="index-0"></span><dl class="type">
<dt id="c.PyByteArrayObject">
<code class="descname">PyByteArrayObject</code><a class="headerlink" href="#c.PyByteArrayObject" title="永久链接至目标">¶</a></dt>
<dd><p>这个 <a class="reference internal" href="structures.html#c.PyObject" title="PyObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyObject</span></code></a> 的子类型表示一个 Python 字节数组对象。</p>
</dd></dl>

<dl class="var">
<dt id="c.PyByteArray_Type">
<a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject">PyTypeObject</a> <code class="descname">PyByteArray_Type</code><a class="headerlink" href="#c.PyByteArray_Type" title="永久链接至目标">¶</a></dt>
<dd><p>Python bytearray 类型表示为 <a class="reference internal" href="type.html#c.PyTypeObject" title="PyTypeObject"><code class="xref c c-type docutils literal notranslate"><span class="pre">PyTypeObject</span></code></a> 的实例；这与Python层面的 <a class="reference internal" href="../library/stdtypes.html#bytearray" title="bytearray"><code class="xref py py-class docutils literal notranslate"><span class="pre">bytearray</span></code></a> 是相同的对象。</p>
</dd></dl>

<div class="section" id="type-check-macros">
<h2>类型检查宏<a class="headerlink" href="#type-check-macros" title="永久链接至标题">¶</a></h2>
<dl class="function">
<dt id="c.PyByteArray_Check">
int <code class="descname">PyByteArray_Check</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*o</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyByteArray_Check" title="永久链接至目标">¶</a></dt>
<dd><p>当对象 <em>o</em> 是一个字节数组对象而且是一个字节数组类型的子类型实例时，返回真。</p>
</dd></dl>

<dl class="function">
<dt id="c.PyByteArray_CheckExact">
int <code class="descname">PyByteArray_CheckExact</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*o</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyByteArray_CheckExact" title="永久链接至目标">¶</a></dt>
<dd><p>当对象 <em>o</em> 是一个字节数组对象，但不是一个字节数组类型的子类型实例时，返回真。</p>
</dd></dl>

</div>
<div class="section" id="direct-api-functions">
<h2>直接 API 函数<a class="headerlink" href="#direct-api-functions" title="永久链接至标题">¶</a></h2>
<dl class="function">
<dt id="c.PyByteArray_FromObject">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="descname">PyByteArray_FromObject</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*o</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyByteArray_FromObject" title="永久链接至目标">¶</a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>根据任何实现了 <a class="reference internal" href="buffer.html#bufferobjects"><span class="std std-ref">缓冲区协议</span></a> 的对象 <em>o</em>，返回一个新的字节数组对象。</p>
</dd></dl>

<dl class="function">
<dt id="c.PyByteArray_FromStringAndSize">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="descname">PyByteArray_FromStringAndSize</code><span class="sig-paren">(</span>const char<em>&nbsp;*string</em>, Py_ssize_t<em>&nbsp;len</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyByteArray_FromStringAndSize" title="永久链接至目标">¶</a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>根据 <em>string</em> 和它的长度 <em>len</em> 生成一个字节数组对象。当失败时，返回 <em>NULL</em>。</p>
</dd></dl>

<dl class="function">
<dt id="c.PyByteArray_Concat">
<a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a>* <code class="descname">PyByteArray_Concat</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*a</em>, <a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*b</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyByteArray_Concat" title="永久链接至目标">¶</a></dt>
<dd><em class="refcount">Return value: New reference.</em><p>连接字节数组 <em>a</em> 和 <em>b</em> 并返回一个带有结果的新的字节数组。</p>
</dd></dl>

<dl class="function">
<dt id="c.PyByteArray_Size">
Py_ssize_t <code class="descname">PyByteArray_Size</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*bytearray</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyByteArray_Size" title="永久链接至目标">¶</a></dt>
<dd><p>在检查 <em>NULL</em> 指针后返回 <em>bytearray</em> 的大小。</p>
</dd></dl>

<dl class="function">
<dt id="c.PyByteArray_AsString">
char* <code class="descname">PyByteArray_AsString</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*bytearray</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyByteArray_AsString" title="永久链接至目标">¶</a></dt>
<dd><p>数组在检查 <em>NULL</em> 指针后以字符数组形式返回 <em>bytearray</em> 内容。返回的字符数组结尾总是加上额外的空字节。</p>
</dd></dl>

<dl class="function">
<dt id="c.PyByteArray_Resize">
int <code class="descname">PyByteArray_Resize</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*bytearray</em>, Py_ssize_t<em>&nbsp;len</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyByteArray_Resize" title="永久链接至目标">¶</a></dt>
<dd><p>将 <em>bytearray</em> 的内部缓冲区的大小调整为 <em>len</em>。</p>
</dd></dl>

</div>
<div class="section" id="macros">
<h2>宏<a class="headerlink" href="#macros" title="永久链接至标题">¶</a></h2>
<p>这些宏减低安全性以换取性能，它们不检查指针。</p>
<dl class="function">
<dt id="c.PyByteArray_AS_STRING">
char* <code class="descname">PyByteArray_AS_STRING</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*bytearray</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyByteArray_AS_STRING" title="永久链接至目标">¶</a></dt>
<dd><p>C函数 <a class="reference internal" href="#c.PyByteArray_AsString" title="PyByteArray_AsString"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyByteArray_AsString()</span></code></a> 的宏版本。</p>
</dd></dl>

<dl class="function">
<dt id="c.PyByteArray_GET_SIZE">
Py_ssize_t <code class="descname">PyByteArray_GET_SIZE</code><span class="sig-paren">(</span><a class="reference internal" href="structures.html#c.PyObject" title="PyObject">PyObject</a><em>&nbsp;*bytearray</em><span class="sig-paren">)</span><a class="headerlink" href="#c.PyByteArray_GET_SIZE" title="永久链接至目标">¶</a></dt>
<dd><p>C函数 <a class="reference internal" href="#c.PyByteArray_Size" title="PyByteArray_Size"><code class="xref c c-func docutils literal notranslate"><span class="pre">PyByteArray_Size()</span></code></a> 的宏版本。</p>
</dd></dl>

</div>
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<li><a class="reference internal" href="#">字节数组对象</a><ul>
<li><a class="reference internal" href="#type-check-macros">类型检查宏</a></li>
<li><a class="reference internal" href="#direct-api-functions">直接 API 函数</a></li>
<li><a class="reference internal" href="#macros">宏</a></li>
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